diff options
author | Heiko Carstens <heiko.carstens@de.ibm.com> | 2010-03-15 00:35:05 -0400 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-03-17 21:43:47 -0400 |
commit | 57b552ba0b2faf7cce66d476ef8ce7f6210c62fd (patch) | |
tree | e9ce4977fdf2259bd5c860b3358261f8f3522c5f /drivers/s390/char/sclp_cmd.c | |
parent | bc32df00894f0e1dbf583cc3dab210d2969b078a (diff) |
memory hotplug/s390: set phys_device
Implement arch specific arch_get_memory_phys_device function and
initialize phys_device for each memory section. That way we finally can
tell which piece of memory belongs to which physical device.
This makes s390's /sys/devices/system/memory/memoryX/phys_device display
the correct thing?
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Dave Hansen <haveblue@us.ibm.com>
Cc: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/s390/char/sclp_cmd.c')
-rw-r--r-- | drivers/s390/char/sclp_cmd.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/s390/char/sclp_cmd.c b/drivers/s390/char/sclp_cmd.c index b3beab610da4..fc7ae05ce48a 100644 --- a/drivers/s390/char/sclp_cmd.c +++ b/drivers/s390/char/sclp_cmd.c | |||
@@ -704,6 +704,13 @@ int sclp_chp_deconfigure(struct chp_id chpid) | |||
704 | return do_chp_configure(SCLP_CMDW_DECONFIGURE_CHPATH | chpid.id << 8); | 704 | return do_chp_configure(SCLP_CMDW_DECONFIGURE_CHPATH | chpid.id << 8); |
705 | } | 705 | } |
706 | 706 | ||
707 | int arch_get_memory_phys_device(unsigned long start_pfn) | ||
708 | { | ||
709 | if (!rzm) | ||
710 | return 0; | ||
711 | return PFN_PHYS(start_pfn) / rzm; | ||
712 | } | ||
713 | |||
707 | struct chp_info_sccb { | 714 | struct chp_info_sccb { |
708 | struct sccb_header header; | 715 | struct sccb_header header; |
709 | u8 recognized[SCLP_CHP_INFO_MASK_SIZE]; | 716 | u8 recognized[SCLP_CHP_INFO_MASK_SIZE]; |